Feed-water-heating system



Jui 29 1924. 1503.082

v G. P.ABORN FEED WATER HEATING SYSTEM Filed Dec. 30 1920 fig/Q I awvemto'a @5 aiC mm Lmf Fatente July 29, id,

GEGR/GE P. ABORN, OF BROOKLINE, MASSACHUSETTS, AS$IGNOR TO WORTHINGTON PUMP AND MACHINERY CGRPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA.

FEED WATER-HEATING SYSTEM.

Application filed December 30, 1920. Serial No. 433,979.

To all whom it may concern Be it known that l, GEORGE ABORN, a citizen of the United States, residing at llrookline, county of Norfolk, and State of Massachusetts, have invented certain new and useful Improvements in Feed-Watch Heating Systems, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to improvements in feedwater heating systems.

llt is the object of the invention to provide an improved feedwater heating system especially adapted tor locomotive use, by which a supply of live boiler steam is fed to the feedwater heater through a supplementary boiler connection thereto controlled by the engine throttle through a suitable valve and connections, so that the valve is opened when the locomotive throttle is closed and the locomotive is therefore drifting or standing, at which time there is, of course,'no exhaust steam being supplied to the heater, and by the same means the valve is closed so as to shut oil such live steam supply to the heater when the throttle is opened and the locomotive is steaming, so that warm feedwater may at all times be available for supply to the boiler by the feedwater pump, thus dispensing with an injector and'avoiding the objectionable practice of pumping cool water into the boiler.

With the above objects in view, the invention will now be described in detail in connection with the accompanying drawing, and the features forming the invention will then be specifically pointed out in the claims.

Referring to the drawing Figure 1 is a plan View of a preferred arrangement of the improved system applied to a locomotive boiler; and

Figure 2 is a side elevation of a suitable feed water heater and its connections for use in this system;

Referring to the drawing, the letter A indicates generally the rear portio of a loc omotive boiler, B the feed water heater and C the cold water supply pump for the heater which may also have combined therewith the feed water pump D'for delivery of. the heater water to the boiler, and the heater system generally may be and is shown similar to that of U. S. Letters Patent 1,850,322, dated August 24:, 1920. Cold supply water passing from the tender, not shown, through connection 121 is delivered by the cold Water supply pump C tothe feed water heater B to which the exhaust steam passes through connection 13 and the heated water is withdrawn by feed water, pump D and delivered to the boiler through connection 14, the pumps being actuated by a suitable auxiliary engine E having its valve chest F secured on one side thereof. Suitable boiler connections 10 and 11 are provided for delivery of live steam respectively to the heater B'and'the valve chest of auxiliary pumping engine E.

In order that the imeans-for supplying the heater with live team and also cutting oft such supply, ma; be controlled by the engine throttle 1, the latter is pivotally mounted on a bracket 2 secured to the boiler,

such throttle being provided with an extension 3 on the end of which is a pin 4: free to ride in a slot in a lever 5 controlling a valve 6 mounted on the live steam connection 10 to the heater, the throttle being connected to valve rod a controlling admission of steam to the engine cylinders in the usual manner. V

With the construction so r'ar described, it will be obvious that when the engine throttle is closed, as indicated by position W, the extension 3 thereof will, through the pin and slot connection-above described, throw the lever 5 of valve 6'in the opposite direction and thus open valve 6' and permit live steam to flow through pipe 10 to the heater B.

hen the engine throttle is opened, as indicated by position X, the operation above described is reversed, the valve is closed, and exhaust steam through a connection to the heater then heats the water therein.

To reduce the amount of flow through the feedwater heater when the locomotive throttle is either closed or open and there is no demand on the feedwater sup ly, there'is located at a convenient point in the steam till amount of steam may connection 11 to suppl pump C a manually controlled throttle va ve 7, and this valve coacts with a valve 8 in the live steam connection to the heater B. By the provision of the connection between valves 7 and 8, consisting of pin and slot connection indicated generally at 9 and similar to that described above with reference to the engine throttle connection to valve 6,it will be seen that when valve 7 is closed, with'its throttle lever 12 in the position indicated at Y, the pump Cis stop ed or slowed down and valve 8 will be 0 used to cut ofi the supply of live steam to the heater, or, preferably, nearly closed to a point where only a small pass to the heater B to heat the water therein when the locomotive throttle is closed and has opened the valve 6. It will be evident from the foregoing that when the locomotive throttle is closed and the pump also shut off or slowed down, there will still be provided a sufiicien't flow of live steam to the heater to keep the water therein warm until the pump is again started or speeded up, by moving the lever of valve 7 to the position indicated at Z, whereupon the live steam supply to the heater is dependent solely on the position of the en ine throttle, as previously described.

It wlllbe understood that various changes and modifications may be made in the 111- vention as above described and still-be within the scope of the claims, and that the invention is not to be confined to use with locomotive feedwater heating systems, but may be used with feedwater heating systems generally.

What is claimed is:

1. The combination with a' boiler and its feedwater heater and supply pump therefor, of a valve controlled live steam connection to said heater, connections between said valve and the engine throttle for controlling admission of live steam to the feedwater heater, and means cooperating with the su ply pump steam valve for controlling t e live steam supply to the heater.

2. The combination with a boiler and its .feedwater heater connections, of live steam GEORGE P. ABORN. i 

